{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZSHYKEZA4AUYQQRSUETILTLEYX","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0260fcc79bc7b826f43f2ce63a70594c6b65a3a631ccd3860b738d9e64822e2d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-02-06T12:30:53Z","title_canon_sha256":"6134774cccd4f1e50fb76bb55e8fea9b814a8eaa8761e795a6d771895876b486"},"schema_version":"1.0","source":{"id":"1802.01906","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01906","created_at":"2026-05-18T00:10:17Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01906v3","created_at":"2026-05-18T00:10:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01906","created_at":"2026-05-18T00:10:17Z"},{"alias_kind":"pith_short_12","alias_value":"ZSHYKEZA4AUY","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZSHYKEZA4AUYQQRS","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZSHYKEZA","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:2d780f926fe4e16fe41ed232072f1ed3b65376659c74ba3277e134dc5d55455a","target":"graph","created_at":"2026-05-18T00:10:17Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Ultrasound detection is one of the most important nondestructive subsurface characterization tools of materials, whose goal is to laterally resolve the subsurface structure with nanometer or even atomic resolution. In recent years, graphene resonators attracted attention as loudspeaker and ultrasound radio, showing its potential to realize communication systems with air-carried ultrasound. Here we show a graphene resonator that detects ultrasound vibrations propagating through the substrate on which it was fabricated. We achieve ultimately a resolution of $\\approx7$~pm/$\\mathrm{\\sqrt Hz}$ in u","authors_text":"C. Stampfer, G.J. Verbiest, J.N. Kirchhof, J. Sonntag, M. Goldsche, T. Khodkov","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-02-06T12:30:53Z","title":"Detecting Ultrasound Vibrations by Graphene Resonators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01906","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6b637522cd9361970bb1a83ced35e6fe8b8411608c71334e363f95fbe6065e80","target":"record","created_at":"2026-05-18T00:10:17Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0260fcc79bc7b826f43f2ce63a70594c6b65a3a631ccd3860b738d9e64822e2d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-02-06T12:30:53Z","title_canon_sha256":"6134774cccd4f1e50fb76bb55e8fea9b814a8eaa8761e795a6d771895876b486"},"schema_version":"1.0","source":{"id":"1802.01906","kind":"arxiv","version":3}},"canonical_sha256":"cc8f851320e029884232a12685cd64c5f2c5575c67d114c765062bc4a3ad966e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc8f851320e029884232a12685cd64c5f2c5575c67d114c765062bc4a3ad966e","first_computed_at":"2026-05-18T00:10:17.030171Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:17.030171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7GLfIvGa/ZVgLgqm25ACrN6LMmiEAcisHD0dBMt/oF7NoKvyw2nPtBDKYh2zl59x6dK872UtFcmJe7BD0w/nBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:17.030651Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.01906","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b637522cd9361970bb1a83ced35e6fe8b8411608c71334e363f95fbe6065e80","sha256:2d780f926fe4e16fe41ed232072f1ed3b65376659c74ba3277e134dc5d55455a"],"state_sha256":"9c56a3455ac8ed4f29ccb17fb4f9bd55a017de0310ae07afbf1a9df1aedea16f"}